Using CAS in golang

main.go

// Using compare-and-swap synchronization primitive to atomically update a shared counter

package main

import (
	"fmt"
	"sync"
	"sync/atomic"
)

func main() {
	var counter = int64(0)
	var wg sync.WaitGroup

	for id := 0; id < 16; id++ {
		wg.Add(1)
		go func () {
			defer wg.Done()
			var success = false
			var updatedCounter int64
			var readCounter int64
			for !success {
				readCounter = counter
				updatedCounter = readCounter + 1
				success = atomic.CompareAndSwapInt64(&counter, readCounter, updatedCounter)
			}
		}()
	}

	wg.Wait()
	fmt.Println(counter)
}